EchoRuler - 14-in-One Sketching Ruler

A small sketching ruler with metric (.5 mm increments) and imperial unit sides (¼" increments), multiple angle tracers, a bit driver that also acts as a key ring hole, and thickness gauges for 1mm 2mm 2.5mm 4mm and 5mm

I've been using it for sketching my knives recently and it works great, enjoy :)